Resorcinol glue

Resorcinol glue, also known as resorcinol-formaldehyde, is an adhesive combination of resin and hardener that withstands long-term water immersion and has high resistance to ultraviolet light.

Unlike epoxy, it does not have gap filling properties, requiring joints to be close fitting and clamped under pressure to achieve good results.

The most common application for resorcinol glue is in adhering the plies of exterior and marine grades of plywood.

Currently one of its main uses is to put together plywood, laminated support beams and other wooden structural elements.

Uncured resorcinol has a relatively short shelf life of about two to three years, depending on storage temperature.